Create Lookalike Audience
meta_create_lookalike_audienceCreates a lookalike audience from a source custom audience, targeting users similar to existing customers in a specified country with a defined size ratio.
Instructions
Creates a lookalike audience based on an existing custom audience or page.
Args:
ad_account_id (string): Ad account ID
name (string): Audience name
origin_audience_id (string): Source custom audience ID to base the lookalike on
country (string): ISO 3166-1 alpha-2 country code (e.g., "US", "GB")
ratio (number): Lookalike size as fraction of country population (0.01–0.20, i.e. 1%–20%)
Returns the new lookalike audience ID.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| ad_account_id | Yes | ||
| name | Yes | ||
| origin_audience_id | Yes | Source custom audience ID | |
| country | Yes | ISO country code (e.g., US) | |
| ratio | Yes | Audience size ratio (0.01–0.20) | |
| response_format | No | Output format: 'markdown' for human-readable or 'json' for machine-readable | markdown |